Intermittent driving device

ABSTRACT

Intermittent driving structure comprising a worm gear, a worm meshed with the worm gear having teeth, each including an arcuate portion which portions are aligned axially of the worm and which together extend the length of the worm engaged with the worm gear and which arcuate portions have no pitch whereby the teeth over this arcuate portion of the worm extend perpendicular to the axis of rotation of the worm so that on each rotation of the worm the worm gear is driven intermittently.

United States Patent Ikeda 1 Feb. 1, 1972 [54] INTERMITTENT DRIVING DEVICE 1,241,911 10/1917 Blake ..74/426 [72] Inventor: Tomoyasu lkeda, 2600 Imaizumicho Up 1,605,154 4/1924 Wilder ..74/426 sunomlyafshl ToChlgl-ken Japan Primary ExaminerLeonard H. Gerin [22] Filed: Apr. 24, 1970 Att0rneyWhittemore, Hulbert & Belknap [21] Appl. No.: 31,648 [57] ABSTRACT Intermittent driving structure comprising a worm gear, a worm meshed with the worm gear having teeth, each including I 58] Fie'ld 74/426 an arcuate portion which portions are aligned axially of the worm and which together extend the length of the worm gaged with the worm gear and which arcuate portions have no [56] References Cited .pitch whereby the teeth over this arcuate portion of the worm n STATES PATENTS extend perpendicular to the axis of rotation of the worm so l 307 86 6/1919 D 74/426 X that on each rotation of the worm the worm gear 18 driven inavls it 336,200 2/1886 Beardslee .....74/426 y 903,469 1 1/1908 Hamacek ..74/426 2 Claims, 2 Drawing Figures WENTEBFEB 1mg SHEET 1 0F 2 INVENTOR TOMOYASU IKEDA BY W ATTORN Y I mew-ma 1 m 3.638.508

SHEET EN 2 INVENTOR TOMOYASU IKEDA ATTORNEY INTERMITTENT DRIVING DEVICE BACKGROUND OF THE INVENTION This device relates to an intermittent driving means adapted for use in a textile goods manufacturing equipment, such as a needle rocker, of the type in which a cotton strip or the like is transferred from one side to the other and the needling and other works are conducted during stoppage of said driving means, and thereafter the transferring operation is again effected. More particularly, it relates to an intermittent driving means of the type described, in which a special worm is provided on a shaft, said special worm being so constructed as to form on one face thereof a worm with a predetermined angular configuration and to form on the other face thereof a toothed section disposed perpendicular to said shaft, and in which rotational transmission to the feed lattice driving shaft and the delivery rollers is achieved through the shaft of a gear meshed with said special worm with the medium of a suitable interlocked mechanism adapted therein.

Among the known driving means for this sort of machines are a ratchet type which utilizes the gear assemblies and a rotor type utilizing friction. The former type, however, is poor in driving force, while the latter type is deficient in achieving perfect control of delivery and stoppage, with resultant irregularity in the distance of delivery or in arrangement of the needle points. In order to eliminate these defects, the present device proposes the use of a special worm gear. The device will now be described in more detail by way of its preferred embodiment with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a side view of the intermittent driving apparatus according to the present device, and

FIG. 2 is a partial plane view thereof.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, there is shown a shaft 1 directly connected to the driving shaft of a needle board, with a bevel wheel 2 being secured at the bottom end of said shaft 1, and a special worm 5 is formed on the shaft 4 of another bevel wheel 3 which is meshed with the first-said bevel wheel, The special worm 5 has its one face formed with a certain predetermined angular configuration and has its other face terminated into a toothed section arranged perpendicular to said shaft 4 and meshed with a gear 6. Said worm is also so constructed that it will give rotation to the gear 6 when its angular portion is engaged with said gear, but it will stop rotation of said gear 6 when the toothed section perpendicular to the shaft 4 is engaged with the gear 6. At the top end of the shaft 7 of said gear 6 is mounted a gear 8 which is engaged with gears 11, 12 through intermediate gears 9, l0, and at the other end of the shaft of these gears are mounted helical gears 13, 14 which, in turn, are meshed with gears l7, 18 secured to a feed lattice driving shaft and delivery rollers 16.

With operation of the machine, the shaft 1 is rotated, which rotation is transmitted through meshed engagement of the bevel gears 2, 3 to the special worm 5 on the'shaft 4 to rotate it. When the angular portion of said special worm is kept in meshed relation with the gear 6 as shown in FIG. 2, the shaft 7 of said gear 6 will be rotated, and its rotation is transmitted through meshed engagement of gears 8-14 to rotate gears 17,

18 which, in turn, cause corresponding rotation of the feed lattice driving shaft 15 and delivery rollers 16 to thereby transfer the cotton strip or the like by a certain fixed distance. When the perpendicular portion of the special worm 5 is brought into engagement with the gear 6, rotation of this gear is stopped, causing simultaneous suspension of rotation of the feed lattice driving shaft and delivery rolls, whereby delivery of the cotton strip is also stopped. Thus, according to the intermittent driving means of the present device, rotation of the feed lattice driving shaft and delivery rollers is effected through interlocked coupling of the special worm and gearing,

so that there is produced large driving force and also motions for rotation an stoppage can be performed accurately with actuation of the special worm, thus completely eliminating possibility of inviting irregularity in the needle points during operation.

What I claim is:

1. An intermittent driving structure for a needle rocker of the type in which a strip of material is transferred from one side to the other and needling and other processes are conducted on the material during the stoppage of said driving means and thereafter the transferring operation is again effected comprising a driving shaft having mounted at one end thereof a bevel gear; a second shaft disposed with its axis of rotation parallel to the driving shaft and having mounted near one end thereof a worm gear having teeth; a third shaft disposed with its axis of rotation perpendicular to the axis of rotation of the driving shaft and the second shaft having mounted at one end thereof a bevel gear which meshes with the bevel gear on the driving shaft and a worm centrally mounted on said third shaft which worm meshes with the worm gear, said worm having teeth, each including an arcuate portion which arcuate portions are aligned axially of the worm and which together extend the length of the worm and engage the worm gear and which arcuate portions have no pitch whereby the teeth over this arcuate portion of the worm extend perpendicular to the axis of rotation of the worm so that on each rotation of the worm, the worm gear is driven intermittently; delivery rollers and a feed lattice driving shaft, said delivery rollers and feed lattice shaft having parallel axis of rotation; and means operable between the second shaft and the feed lattice driving shaft and the delivery rollers to drive the feed lattice driving shaft and the delivery rollers.

2. The structure as set forth in claim 1 wherein the means operable between the second shaft and the feed lattice driving shaft and the delivery rollers comprises a spur gear mounted on one end of the second shaft; a fourth and fifth shaft disposed with their axis of rotation parallel to the axis of rotation of the second shaft, each of said fourth and fifth shafts having mounted at one end thereof a spur gear and at the other end thereof a helical gear; a pair of intermediate spur gears disposed with their axis of rotation parallel to the axis of rotation of the second shaft, one of said intermediate spur gears disposed between and meshed with the spur gear on the second shaft and the spur gear on the fourth shaft, and the other of said intermediate spur gears disposed between and meshed with the spur gear on the second shaft and the spur gear on the fifth shaft; a gear mounted on the feed lattice driving shaft and meshed with the helical gear mounted on the fourth shaft; and a gear mounted on the delivery rollers and meshed with the helical gear mounted on the fifth shaft. 

1. An intermittent driving structure for a needle rocker of the type in which a strip of material is transferred from one side to the other and needling and other processes are conducted on the material during the stoppage of said driving means and thereafter the transferring operation is again effected comprising a driving shaft having mounted at one end thereof a bevel gear; a second shaft disposed with its axis of rotation parallel to the driving shaft and having mounted near one end thereof a worm gear having teeth; a third shaft disposed with its axis of rotation perpendicular to the axis of rotation of the driving shaft and the second shaft having mounted at one end thereof a bevel gear which meshes with the bevel gear on the driving shaft and a worm centrally mounted on said third shaft which worm meshes with the worm gear, said worm having teeth, each including an arcuate portion which arcuate portions are aligned axially of the worm and which together extend the length of the worm and engage the worm gear and which arcuate portions have no pitch whereby the teeth over this arcuate portion of the worm extend perpendicular to the axis of rotation of the worm so that on each rotation of the worm, the worm gear is driven intermittently; delivery rollers and a feed lattice driving shaft, said delivery rollers and feed lattice shaft having parallel axis of rotation; and means operable between the second shaft and the feed lattice driving shaft and the delivery rollers to drive the feed lattice driving shaft and the delivery rollers.
 2. The structure as set forth in claim 1 wherein the means operable between the second shaft and the feed lattice driving shaft and the delivery rollers comprises a spur gear mounted on one end of the second shaft; a fourth and fifth shaft disposed with their axis of rotation parallel to the axis of rotation of the second shaft, each of said fourth and fifth shafts having mounted at one end thereof a spur gear and at the other end thereof a helical gear; a pair of intermediate spur gears disposed with their axis of rotation parallel to the axis of rotation of the second shaft, one of said intermediate spur gears disposed between and meshed with the spur gear on the second shaft and the spur gear on the fourth shaft, and the other of said intermediate spur gears disposed between and meshed with the spur gear on the second shaft and the spur gear on the fifth shaft; a gear mounted on the feed lattice driving shaft and meshed with the helical gear mounted on the fourth shaft; and a gear mounted on the delivery rollers and meshed with the helical gear mounted on the fifth shaft. 